What is it for, it doesn’t save numbers globally its just a number block without a seeing number is basically what i learned about it. Can it do anything else?
It can save numbers globally. If you have a global behavior in one object and a global behavior in another object, they will have the same stored value, as long as both have the same save enabled.
HOWEVER, global behaviors do not save numbers across levels. You need a save behavior to did that, which will also save the number for the next time you play the game.